Book with exchangeable leaves and binding element therefor



S'Kp 1,193 1);. @AME'R 2,153,575.

BOOK WITH EXCHANGEABLE LEAVES AND BINDING ELEMENT THEREFOR Filed May 9, 1955 INVENTOR ATTORNEY Patented Apr. 11, 11 239 noon Wrrn EXCHANGEABLE LEAVES nmnmc ELEMENT THEREFOR PATENT OFFICE- AND irving V. Kramer, Bronx, N. .Y., assignor, bymesne assignments, to Fay Kramer, New

York, N. Y.

Application May 9, 1935, Serial No. 20,543 i i Claims.

This'invention relates to books with exchangeableleaves and binding elements therefor.

An object of this invention is to provide a book of the character described composed of leaves 5 having T-shaped slots at the binding edge and a unitary binding element onto which the leaves are jammed, having portions received in the heads 'of the slots for retaining the leaves in position.

A further object of this invention is to provide in a-looseleaf book of the character described a binding element having a plurality of spaced interconnected coils adapted to be received in each slot of the stacked leaves. I

A still furtherobject of this invention is to pro vide a highly improved looseleaf'book of the character described which shall comprise comparatively few and simple parts, be relatively inexpensive to manufacture, simple to assemble, and withal practical and efiicient to a high degree.

Other objects of this invention will in part be obvious and in part hereinafter pointed out. The invention accordingly consists in the features of construction, combinations of elements,

I and arrangement of pa ts which will be exemplb; fied in the construction hereinafter described,

' and of which the scope-of application will be indicatedin the following claims.

In the accompanying drawing, in which is vention,

Fig. 1 is atop plan view of a looseleaf book embodying the invention with thecover open; I taken on line,

Fig. 2 is a cross-sectional view 22 of Fig. 1; V

Fig. 3 is a cross-sectional view. taken on line 3,3 of Fig. 2;

Fig. 4 is a side elevational view ing element shown-in Fig. 1;

Fig. 5 is a partial plan view-oi an edge of one the adjacent edges of the cover II and the leaves l2. The adjacent edges of the covers II are formedwith a plurality oi spaced T shaped slots inner edges-thereof with spaced T-shaped slots shown various possible embodiments of thisiner the bindand a binding element. for attaching together- The leaves l2 are also formed adjacent the the slots are preferably rounded at the ends, as 5 at I l, and at the middle, as at l8, and narrower, as at [9, betweensaid portions l1 and I8. The leg portionZll of the .slot may be narrower than the head portion thereof. The binding element It may be made of a 10 single piece ofresilient round wire stock and comprises a plurality of coil portions 25 interconnected by longitudinal portions 26. Each coil portion 25 may comprise a plurality of helicalconvolutions 21 out of contact with one another. 15

For the purpose of illustration only, the drawing shows three convolutions although said coils may have any suitable number of convolutions. The coil portions 25 pass through the slot portions q 20 of the slots l6 and into the head portions iii a 20 of said slots. The outer convolutions 21 of each coil portions 25 are received within the end portions ll of the slots, and thecentral convolution is received within the central portion l8 thereof. The width of the slot portions I9 is 25 preferably substantially equal to the diameter of x the wire stock of which the element M is made.

The leaves maybe applied to the binding element by squeezing together the convolutions of each coil section and jamming the leaves onto the coils, 30 the tabs 30. formed on opposite sides of the slot portions 20 spreading somewhat to admit the convolutions 21 into the head portions of the slots.

The covers may be similarly assembled with the binding element. After the coil portions 25 are 35" in the slots, the convolutions will spring apart when released due to the resiliency of the wire.

Although the element II is shown in the drawing as being made of round wire, it will be understood that itmaybe made of wire 'of different 40 width. In Fig; 11 the leaf III: has a slot lib hav- 50 ing a headportion 48 and a leg portion lBgadjacent one end of the head portion, instead of at the middle, as in the slotl6a. In Fig.- 12 the sheet or leaf l2c has a slot 160 the leg portion 50 whereof is gigzag shaped.

- It will be understood that the binding elements may be used in conjunction with covers such as shown in Fig. 6. In Fig. 6 the cover II has a back portion 6| and side portions 2. The binding element 42 has the flat bottom portion thereof contacting the back portion ll oi the "cover. Said binding element may be attached to the cover by an elongated strip 84 extending through the binding element and holding-the flat portions thereof against the'back oi the cover. The end portions 65 of the member 84 may be attached to the back or the cover by rivets I, staples or in any other suitable manner.

The coils of unit Il may be separately connected to the covers,-in any suitable manner, instead of being interconnected in a continuous bindingelement. I

It ill thus be seen that there is provided a device in which the several objects of this invention are'achieved, and which is well adapted to meet the conditions 01 practical use.

As various possible embodiments might be made of the 'above invention, .and' as various changes 7 ing coil portions disposed within-the head portions of said slots, and longitudinal portions interconnecting said coil portions, each coil portion comprising a plurality or convolutions, said convolutions being normally out of contact and adapted to be pressed together to insertthe same into said slots, and the heads of said slots being or such length as to permit said convolutions to spring apart after insertion into the heads of said slots, the end convolutions of said coil portions being disposed adjacent the ends of the heads of said slots.

2. In a looseleaf book, the combination of a plurality of stacked leaves having spaced similar registering open slots at adjacent edges, said slots tinuous member and comprising a plurality of spaced resilient interconnected coil portions, each coil portion comprising a plurality of normally non-contacting convolutions, said coil portions being disposed within said laterally positioned porpermit said convolutions to spring apart therein necting portions, the end convolutions of said coil portions being disposed adjacent the ends of.

tions -oi said slots, and'said convolutions being spaced apart within said laterally positioned portions of said slots, said laterally positioned portions of said slots being of sufficient length to after insertion thereinto, through said interconthe laterally positioned portions oi! said slots.

3.1 binding element for a looseleai book made of a resilient pieceof wire and comprising a pinrality oi helical coil portions interconne ted by longitudinal portions, each coil portion co "prising a'plurality of convolutions, said convolutions. being out oi contact with one another.

4. a binding element for a looseleai-book made or a resilient piece of wire and comprising a pinrality oi. helical coil portions interconnected by longitudinal portions, each coil portion comprising a plurality of convolutions, said convolutions being out of contact with'one another, said longitudinal portions being in alignment.

5. A binding element {or a loooeleat book made of a resilient piece or wire and comprising a plurality or helicalcoiiportions interconnected by longitudinal portions, each coil portion comprising a plurality of convolutions, said convolutions being out of contact with one another, the distance between adjacent coil portions being greater than the distance between adjacent convolutions of said coil portions;

6. In a looseleai' book, the combination of a plurality of stacked leaves having spaced, similar, registering, T-shaped open slots at' adjacent edges thereof, and a binding element for said 1 leaves made of a single piece of resilient wire and having. helical coil portions disposed within theihead portions of said slots, and portions interconnecting said coil portions, each cell portion comprising a plurality'oi convolutions, said convolutions being normally out of contact and; adapted to be pressed together to insert the same into said slots and the heads of said slots being of such length as to permit said convolutions to spring apart to normal position after insertion into the heads of said slots, the end convolutions of said coil portions being disposed adjacent the ends of said slots.

7. In a looseleai' book, the combination 0 a plurality of stacked leaves having spaced, sfinilar, registering T-shaped open slots at adjacent edges thereof, and a binding element'for said leaves made of a single piece of resilient wire and having helical coil portions disposed within the head portions of said slots, and longitudinal portions interconnecting said coil portions, ea'ch coil portion comprising a'plurality of convolutions, said convolutions being normally out of contact and adapted to be pressed together to insert the same into said slots and the heads ofsaid slots being 01' such length as to permit said convolutions to spring apart to normal position after insertion into the heads or said slots, the end convolutions or said coil portions being disposed adjacent the ends oi. said slots, the space between adjacent coil portions being greater than the space be-v tween adjacent convolutions of said coil portions. 8. In a looseleai book, the combination of a plurality of stacked leaves having spaced, similar,

registering, T-shaped open slots at adjacent edges thereof, and a binding element for said leaves made of a single piece of resilient wir and having helical coil portions disposed the head portions of said slots, and longitudinal portions interconnecting said coil portions, each coil portion comprising a plurality (if-convolutions, said convolutions being normally out of contact and adapted to be pressed together to insert the same into said slots and the heads of said slots being 01' such lengtlr as to permit said convolutions to springapart' after insertion ,into the heads of said slots, the end convolutions of said coll por-- tions being disposedadjacent the ends of said slots, the space between adjacent coil portions being greater than the space between adjacent convolutions of said coil portions, said longitudinal portions being in alignment.

' 9. In a looseleai' book,'the combination of a plurality of stacked leaves having p ced registering open slots at adjacent edges, said slots having portions positioned laterally otsaid edges and portions interconnecting the laterally positioned portions with said edges, and a binding element for said leaves made of a single, continuous. resilient wire and comprising a plurality of spaced interconnected helical coil portions, each coil portion comprising a plurality of normally non-contacting convolutions, said coil portions being disposed within said laterally positioned portions of said slots, and said convolutions being spaced apart within said laterally positioned portions of said slots,- said laterally positioned por-' tions of said'slots being of sumcient length to permit said conyolutions to spring apart to portions being disposed on opposite sides of said interconnecting portions or said slots.

leaves having spaced. similar. registering open slots at adjacent edges, said slots havingelongated portions interconnec tioned portions withsaid edges, and a binding element for said leaves made oi a single, con-- tinuous elongated piece of resilient metal of uniform cross-section, and comprising a plurality of spaced interconnected coil portions, the convolutions of said .0011 portions being out of contact with one another and disposed within the parallelly positioned portions of said slots, the distance between adjacent coils being greater than the distance between adjacent convolutions of each coll.

IRVING V.

3' 10.111 a looseleai book. a plurality of stacked 

